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Variolite

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About VarioliteHide

An old term for basaltic rocks with a pock-marked appearance, composed of variolites (radial aggregates of feldspar and pyroxene microlites) in a microcrystalline or devitrified glassy base. The variolitic texture denotes rapid cooling and the quench growth of the crystals, such as is often found in submarine basalts, and should not be confused with spherulitic texture which indicates devitrification.


Classification of VarioliteHide

QAPF_V_9,9*,9_,10,10*,10_.png

Basaltic rock appears in field 9 and 10 in the QAPF diagram.

TAS_B.png

Basaltic rock is found in field B in the TAS diagram.

Synonyms of VarioliteHide

References for VarioliteHide

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Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press

Internet Links for VarioliteHide

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